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authorLi RongQing <lirongqing@baidu.com>2018-03-30 10:11:21 +0800
committerDavid S. Miller <davem@davemloft.net>2018-04-01 20:53:50 -0400
commitda01ec4ee5e69933641e6017d6461d0ce9dbfac6 (patch)
treefbe3f9983d6d51d714df29e66c54459ad5ebb8c8 /net/sched/sch_htb.c
parentec1d8ccb07deaf30fd0508af6755364ac47dc08d (diff)
downloadlinux-da01ec4ee5e69933641e6017d6461d0ce9dbfac6.tar.bz2
net: sched: do not emit messages while holding spinlock
move messages emitting out of sch_tree_lock to avoid holding this lock too long. Signed-off-by: Li RongQing <lirongqing@baidu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_htb.c')
-rw-r--r--net/sched/sch_htb.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 1ea9846cc6ce..2a4ab7caf553 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1337,6 +1337,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
struct nlattr *tb[TCA_HTB_MAX + 1];
struct tc_htb_opt *hopt;
u64 rate64, ceil64;
+ int warn = 0;
/* extract all subattrs from opt attr */
if (!opt)
@@ -1499,13 +1500,11 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
cl->quantum = min_t(u64, quantum, INT_MAX);
if (!hopt->quantum && cl->quantum < 1000) {
- pr_warn("HTB: quantum of class %X is small. Consider r2q change.\n",
- cl->common.classid);
+ warn = -1;
cl->quantum = 1000;
}
if (!hopt->quantum && cl->quantum > 200000) {
- pr_warn("HTB: quantum of class %X is big. Consider r2q change.\n",
- cl->common.classid);
+ warn = 1;
cl->quantum = 200000;
}
if (hopt->quantum)
@@ -1519,6 +1518,10 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
sch_tree_unlock(sch);
+ if (warn)
+ pr_warn("HTB: quantum of class %X is %s. Consider r2q change.\n",
+ cl->common.classid, (warn == -1 ? "small" : "big"));
+
qdisc_class_hash_grow(sch, &q->clhash);
*arg = (unsigned long)cl;